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EP 0 445 840 A3 |
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EUROPEAN PATENT APPLICATION |
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Date of publication A3: |
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18.09.1991 Bulletin 1991/38 |
(43) |
Date of publication A2: |
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11.09.1991 Bulletin 1991/37 |
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Date of filing: 20.02.1986 |
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International Patent Classification (IPC)5: D01F 6/66 |
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Designated Contracting States: |
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BE CH DE FR GB IT LI NL SE |
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Priority: |
22.02.1985 JP 32740/85 05.04.1985 JP 71209/85 17.04.1985 JP 80404/85 23.04.1985 JP 85437/85
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(62) |
Application number of the earlier application in accordance with Art. 76 EPC: |
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86102215.0 / 0192262 |
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Applicant: IDEMITSU KOSAN COMPANY LIMITED |
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Tokyo 100 (JP) |
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Inventors: |
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- Shigeru, Matsuo
Kimitsu-gun,
Chiba-ken (JP)
- Murakami, Tomoyoshi
Kimitsu-gun,
Chiba-ken (JP)
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Representative: Kraus, Walter, Dr. et al |
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Patentanwälte Kraus, Weisert & Partner
Thomas-Wimmer-Ring 15 D-80539 München D-80539 München (DE) |
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Remarks: |
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This application was filed on 15 - 03 - 1991 as a divisional application to the application
mentioned under INID code 60. |
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Polycyanoaryl ether fibers |
(57) Polycyanoaryl ether fibers prepared from polycyanoaryl ethers containing specific
repeating units and number average molecular weights or reduced viscosities by stretching
melt-spinned fibers, said fibers having superior heat resistance and mechanical strength.